....they can't mandate any exclusive material for the games ; those rights are held by Activision. Sony likely paid a lot of $$ for this "exclusive" content, just like MS did with the XBOX version of S-M1 (the PS2 version had NO extra content).

I am jealous now...and if this tilt controlled character is cool I will buy the ps3 version that is unless the 360 version runs better, but I'm pretty sure Activision will get them running exactly on par...